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PCB laminated process

1. Cucair cuideam autoclave

Laminates is a container filled with high temperature saturated water vapor, and can apply high pressure, Laminates the specimen, placed in it for a period of time, forced the water into the plate, and then takes out the plate and placed on the surface of high temperature molten tin, measurement of its “resistance to lamination” characteristics. This word has another synonym for Pressure Cooker and is commonly used in the industry. In addition, there is a kind of “cabin pressure method” carried out with high temperature and high pressure carbon dioxide in the lamination process, which also belongs to this kind of Autoclave Press.

2. Cap Lamination

The “outer layer” of MLB was laminated and pressed on thin single-sided copper-skinned substrates. It was not until the end of 1984, when MLB production increased significantly, that the current copper-skinned large or bulk lamination method (Mss Lam) was adopted. B ’e Cap LaminaTIon an t-ainm a bh’ air a ’dhlùthadh tràth MLB seo le bhith a’ cleachdadh aon substrate tana craiceann copair.

3. Caul Plate

Nuair a thèid an truinnsear multilayer a bhrùthadh, eadar gach fosgladh den leabaidh naidheachd (Fosgladh), bhiodh iad gu tric a ’cruachadh mòran“ leabhraichean ”airson a bhith air am brùthadh stuth sgaoilte truinnsear (leithid 8 ~ 10 seata), eadar gach seata de“ stuth sgaoilte ”(Leabhar) , feumar a sgaradh le plàta stàilinn rèidh rèidh agus cruaidh, Is e Caul Plate no Separate Plate a chanar ris an seòrsa plàta stàilinn sgàthan seo. Tha AISI 430 no AISI 630 air an cleachdadh gu cumanta an-dràsta.

4. Crease

Anns a ’phreas laminate, gu tric a’ toirt iomradh air a ’chraiceann copair ann an giullachd an crease. Tha craiceann copar tana nas lugha na 0.5 unsa nas dualtaiche don locht seo nuair a thèid a bhrùthadh ann an grunn shreathan.

5. Dent

Tha e a ’toirt iomradh air an ro-shocair agus eadhon air an uachdar copair, a dh’ fhaodadh a bhith air adhbhrachadh le brùthadh spotach a ’phlàta stàilinn a thathas a’ cleachdadh anns a ’phreas. Ma tha oir a ’phlàta a’ tuiteam gu grinn ann an dòigh coltach ri locht, canar Dish Down ris. These defects, if unfortunately left on the line after copper etching, will cause impedance instability of high-speed transmission signal, and Noise Noise. Therefore, the copper surface of the substrate should be avoided as far as possible.

6. Foil LaminaTIon

It refers to Mass production multilayer board, the outer layer of which is pressed with copper foil and film directly and the inner layer of which is called Mass Lam for multilayer board, replacing the traditional method of single thin substrate in the early stage.

7. Kiss Pressure

When the multilayer board is pressed, when the plates in each Opening are placed and positioned, it begins to heat up and lift up from the bottom hot plate with a powerful hydraulic top column (Ram) to press the loose material in each Opening for bonding. At this time combined with the film (Prepreg) began to gradually soften and even flow, so the pressure used for the top extrusion can not be too large, to avoid plate sliding or glue flow too much. This initial lower pressure (15 to 50 PSI) is called “kiss pressure”. But when the resin in the film bulk material is softened by heat and gelatinized, and will harden, that is, to increase to the full pressure (300 ~ 500 PSI), so that the bulk material to achieve close combination and the formation of a firm multi-layer board.

8. Kraft Paper

Tha pàipear Kraft air a chleachdadh mar bufair gluasad teas airson a bhith a ’lannachadh bòrd multilayer no bòrd substrate. Tha e air a chuir eadar truinnsear teth (Platern) a ’phreas agus a’ phlàta stàilinn gus an lùb teasachaidh as fhaisge air an stuth mòr a thomhas. Eadar iomadh substrate no plaidean multilayer ri bhrùthadh. As far as possible to close the temperature difference between the various layers of the plate, the commonly used specifications are 90 to 150 pounds. Air sgàth teòthachd àrd agus bruthadh àrd, tha am freumhag sa phàipear air a bhriseadh, chan eil e duilich tuilleadh agus tha e duilich pàirt a ghabhail, agus mar sin feumaidh sinn feuchainn ri ath-chuir a-steach. This kraft paper is a mixture of pine and a variety of strong alkali boiled, after the volatiles escape and acid removal, then washed and precipitation; When it becomes pulp, it can be pressed again to become a rough and cheap paper.

9. Lay it Up

Before the laminate or substrate is pressed, it is necessary to align, fall, or set the inner layer, film, copper and other bulk materials with steel plates, kraft paper padding materials, etc., so that it can be carefully fed into the pressing machine for hot pressing. This kind of preparation is called laying Up. In order to improve the quality of multilayer board, not only this “overlap” work to be carried out in the temperature and humidity control of the dust-free room, but also in order to Mass production speed and quality, generally the following eight layers are adopted large pressure plate method (Mass Lam) construction, and even need to use the “automatic” overlap way, in order to reduce human errors and losses. Gus uidheamachd innealan is innealan a shàbhaladh, bidh an fhactaraidh choitcheann nas “tar-lùbadh” agus “bòrd fillte” an dà chuid air an aonachadh gu aonad giullachd coileanta, agus mar sin tha an innleadaireachd fèin-ghluasaid gu math toinnte.

10. Mass LaminaTIon (laminated)

This is a new construction method of abandoning “alignment tip” and adopting multiple rows of plates on the same surface. Bho 1986, nuair a tha an t-iarrtas airson ceithir is sia lannan air a dhol am meud, tha an dòigh air laminating multilaminates air atharrachadh gu mòr. In the early stage, only one shipment plate was arranged on the process plate to be pressed. This one-to-one arrangement has been broken in the new law, which can be changed into a pair of two, or a pair of four, or even more rows of plates to be pressed together according to its size. The second is to cancel all kinds of loose material (such as inner sheet, film, outer single sheet, etc.) of the alignment tip; The outer layer is changed to copper foil, and the “target” is pre-made on the inner layer plate, which is “swept” to get the target after pressing, and then the tool hole is drilled from the center, which can be set on the drilling machine for drilling. As for six or eight layers of boards, the film of each inner layer and sandwich can be riveted and then pressed at high temperature. It can also increase the number of “High” and Opening according to the base plate method. It can not only reduce the labor and double the output, but also carry out automation. Is e an dòigh platen air a ’bhun-bheachd ùr seo“ platen mòr ”no“ platen mòr ”. Anns na beagan bhliadhnaichean a dh ’fhalbh, tha mòran ghnìomhachasan brùthaidh OEM proifeasanta air a bhith ann an Sìona.

11. Platen Hot Platen

Tha e na àrd-ùrlar togail gluasadach airson inneal brùthaidh laminate no saothrachadh plàta bonn. Is e am mesa meatailt falamh den t-seòrsa maise seo, gu bunaiteach tha e airson cuideam agus stòr teas a thabhann airson planc, feumaidh adhbhar fhathast comas còmhnard, co-shìnte a chumail ann an teòthachd àrd airson a dhol. Mar as trice bidh gach plàta teth freumhaichte taobh a-staigh a ’phìob smùid, tubing teth no eileamaid teasachaidh dìon, agus bu chòir oir a-muigh na tha timcheall a bhith air a lìonadh le stuth inslitheach, gus call teas a lughdachadh, agus uidheamaichte le inneal mothachaidh teothachd gus smachd a chumail air teòthachd.

12. Press Plate

Refers to the substrate or multilayer board in the pressing, used to separate each group of loose Book (refers to copper, film and inner layer of a Book, etc.). Is e a ’phlàta stàilinn cruas àrd seo AISI 630 (cruas suas gu 420 VPN) no stàilinn alloy AISI 440C (600 VPN), chan e a-mhàin gu bheil an uachdar uamhasach cruaidh, agus air a lìomhadh gu faiceallach gu sgàthan, faodar a bhrùthadh a-steach don t-substrate còmhnard no bòrd cuairteachaidh . Therefore, it is also called Mirror Plate, also known as Carrier Plate. Tha riatanasan a ’phlàta stàilinn seo gu math teann, cha bu chòir don uachdar aige a bhith a’ nochdadh sgrìoban, dents no ceangal sam bith, bu chòir do thiugh a bhith èideadh, bu chòir cruas a bhith gu leòr, agus faodaidh e seasamh ris an searbhag cheimigeach a thig bho bhith a ’brùthadh aig teòthachd àrd. The price of this kind of steel plate is very expensive because it is able to withstand strong mechanical brushes after each pressing.

13. Print Through

Tha an neart cuideam (PSI) a thathar a ’cleachdadh nuair a tha an truinnsear lannaichte ro mhòr, gus am bi mòran de resins air an toirt a-mach às a’ phlàta, agus mar thoradh air an sin bidh an craiceann copair air a bhrùthadh gu dìreach air a ’chlò ghlainne, agus tha eadhon an clò glainne rèidh agus deformed, mar sin. nach eil tiugh a ’phlàta gu leòr, gu bheil an seasmhachd meud truagh, agus gu bheil an loidhne a-staigh air a bhrùthadh a-mach à cumadh agus easbhaidhean eile. In serious cases, the wire foundation often has direct contact with the glass fiber cloth, burying a “ConducTIve glass fiber” leakage concern. CAF). The basic solution is according to the principle of Scaled Flow, large area pressing should use large pressure intensity, small plate surface use small pressure intensity; The Pressure and Force of field operation are calculated using 1.16PSI/in2 or 1.16Lb/in4 as a baseline.

14. Relamination(RE-LAM) laminated plate

The inner layer of thin substrate, is made of substrate suppliers using film and copper pressed together, circuit board factory bought thin substrate made of inner circuit board, but also with the film to press synthetic multilayer board, some occasions often special emphasis and called “re-pressed together”, referred to as re-LAM. Gu dearbh, tha e dìreach mar sheòrsa de “Draven” airson plywood lannaichte, gun bhrìgh sam bith eile.

15. Resin Recession, Resin retreat

Cha b ’urrainn do phlàta ceapaire anns an ìre B – ìre de fhilm roisinn no bòrd BoJi (carson) anns a’ chiad fhear, a chruadhachadh gu tur fhathast às deidh a bhith a ’brùthadh (is e sin, dìth ìre polymerization), lìon an toll air a’ cholbh staoin staoin, cuin airson biopsy, a chaidh a lorg gum bi am balla copair de tholl air cùl dìth roisinn polymerization sònraichte, a ’nochdadh bho bhalla copair air ais gu falamh, tha“ roisinn roisinn ”a’ ciallachadh. Bu chòir an locht seo a bhith air a sheòrsachadh mar dhuilgheadas iomlan den phròiseas no den phlàta, a tha nas cunnartaiche na easbhaidhean teicnigeach sgrìobadh an uachdar, agus bu chòir an adhbhar a sgrùdadh gu faiceallach.

16. Scaled Flow Test

It is a method of detecting the amount of glue in the film (Prepreg) when the laminate is pressed.It is also a test method for Resin Flow under high temperature and high pressure. See section 2.3.18 of IPC-TM-650 for detailed practice, and see PCB Information Journal, No. 14, P.42 for a description of theory and content

17. Separator Plate, mirror Plate

Nuair a thèid a ’phleit bhunait no an truinnsear multilayer a bhrùthadh, is e a’ phlàta cruaidh stàilinn (410,420, msaa) a thèid a chleachdadh gus na Leabhraichean a sgaradh anns gach fosgladh (Solas an latha) den phreas. In order to prevent adhesion, the surface is specially treated to be very flat and bright, so it is also called Mirror Plate.

18. Sequential Lamination

It refers to the Interconnection of the layers of a multilayer board that is formed not at the same time but at the same time at the same time in the form of blind or buried holes. Faodaidh an dòigh seo uachdar a ’bhùird a shàbhaladh a bhith air a drileadh a-mach às an làn tholl. Dh’fhaodadh bùird a bharrachd a bhith rim faighinn gus an àireamh de uèirichean agus SMDS a mheudachadh, ach chaidh dàil mhòr a chur air a ’phròiseas saothrachaidh.

19. Starvation glue

The word in the circuit board industry, has been commonly used in multilayer board bonding “lack of glue” Starvation problem expression. A ’toirt iomradh air an t-sruthadh roisinn dona, no suidheachaidhean brùideil le neo-iomchaidh, a’ leantainn gu crìoch air a ’bhòrd multilayer, corp plàta an dìth glaodh ionadail.

20. The Swimming line slides away

Tha snàmh a ’toirt iomradh air gluasad sleamhnachaidh den fhilleadh a-staigh de bhòrd multilayer aig àm teannachaidh. This is closely related to the length of the “Gel Time” of the film used. At present, the industry has tended to use shorter Gel Time, so the problem has been reduced a lot.

21. Clò-bhualadh fleòdradh telegraphing, clò-bhualadh falaichte

In order to prevent the trouble of glue overflow, a heat-resistant film (such as Tedlar) is added to the copper foil or thin base plate of the scattered material which has been stacked, so as to facilitate the use of stripping or deforming after pressing. Ach, nuair a tha am film a thathar a ’cleachdadh airson a’ phlàta a-muigh an ìre mhath tana agus nach eil am foil copair ach 0.5 unsa, faodar pàtran cuairteachaidh a ’phlàta a-staigh a ghluasad chun phàipear fuasglaidh fo bhruthadh àrd. When the demoulding paper is reused on a set of boards, it is likely to float the original pattern on the copper surface of the new board, this phenomenon is called Telegraphing.

22. Temperature Profile

In the circuit board industry in the pressing process, or downstream assembly of infrared or hot air welding (Reflow) process, all need to seek the temperature (vertical axis) and time (horizontal axis) matching composition of the best “temperature curve”, in order to improve the solder quality in mass production rate.

23. Vacuum Lamination

Bidh am facal gu tric a ’nochdadh anns a’ ghnìomhachas PCB ann an ceangal film laminate agus tioram. Tha brùthadh Vacuum de bhòrd multilayer air a roinn ann am Vacuum Frame Frame (Vacuum Frame), a tha na “dhòigh pumpaidh” leis a ’phreas hydraulic tùsail, agus an seòmar Vacuum (Autoclave), a tha na“ dhòigh cuideam ”le cleachdadh àrd teòthachd agus carbon dà-ogsaid le bruthadh àrd. Tha Hydralic Vacuum Pressing a ’gabhail thairis barrachd air 90% den mhargaidh air sgàth an uidheamachd sìmplidh, prìs saor agus obrachadh goireasach. Tha an dàrna fear air sgàth gu bheil an uidheamachd agus an obair gu math toinnte, agus gu bheil an tomhas mòr, a bharrachd air cosgais nan solarachaidhean a tha a dhìth agus nas daoire, agus mar sin chan eil an uchd-mhacachd mòran.

24. Wrinkle, Wrinkle

Gu tric a ’toirt iomradh air cuideam nuair a tha sruthadh glaodh ro mhòr. 11. Tha Wrinkle ag adhbhrachadh an Wrinkle, a tha ag adhbhrachadh gu bheil an còmhdach a-muigh aige beagan nas laige ann an neart agus cruas, mar a tha am foil copar 0.5oz ris an canar Wrinkle mar as trice. The term is also used in other areas.